Scm440 42crmo4 1.7225 Sae4140 708m40 42cd4 Alloy Steel Bar

We are offering scm440 42crmo4 1.7225 sae4140 708m40 42cd4 alloy steel bar.
1. quality: aisi4140
2. standard performed: astm a29/a29m-04
3. equal standard:
america standard: aisi4140
international standard: 42crmo4
japan standard: scm440
germany standard: 42crmo4
4. size: 12-160mm
5. chemical composition:
grade c si mn p s ni cr mo cu al
aisi4140 0.38
0.41 0.15
0.35 0.85
1.00 max
0.015 max
0.040 max
0.25 0.80
1.10 0.15
0.25 max
0.35 0.012
0.030
6. mechanical property:
name tensile
strength
σb (mpa) yield
strength
δ5 (%) area
reduction
ψ (%) impact
work
akv (j) notched
bar impact
strength
αkv (j/cm2) hardness sample
size
no. min
1080(110) min
12 min
45 min
63 min
78(8) max
217hb 25mm
7. size tolerance:
length tolerance: +100mm/-0mm
side length tolerance: +/-2mm
straightness: max 6mm/m
8. quality contation
both end of each bar must be cut.
Ladle furnanced and vacuum de-gassed
show heat no. On each bar
surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove.
The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.
we can supply steel round bar, square steel, the grade such as, ss400b, s20c, s45c, ck45, sae1020b, sae1045b, sae4140, sae4150, sae4340, sae8620, 42crmo4, 15b36cr, s50c, s65c. The diameter is from 20mm to 300mm. It is hot rolled and black surface. If you need, you can contact with me.